General Grindstones Selection Guide Selection Method for General Grindstones for Flat Surface Grinding
Features of General Grindstones
| Grindstone Types | Color | Features |
|---|---|---|
| SG Grindstones | Blue | It is a cutting-edge ceramic grindstone enabling high performance grinding, which can be used on anything from standard steel to alloy steel. |
| WA Grindstones | Red | It is the most standard grindstone that can be used on standard steel to general tempered steel. |
| 32A Grindstones | Gray | It is a grindstone that shines with processes that need corners raised and can be used with anything from standard steel to alloy steel. |
| GC Grindstones | Green | It is a grindstone that shines when processing cemented carbides, non-ferrous metals, and non-metals. |
| 85A Grindstones | Pink | It is a grindstone that shows high performance with alloy steel, tool steel, and tempered steel and can be used with anything from standard steel to alloy steel. |
| Z300 Grindstones | Cream | It is a grindstone that shines when grinding the difficult to cut SUS300 type materials. |
Relation of Particle Size and Surface Roughness of General Grindstones (Reference)
| Particle Size (#) | Surface Roughness |
|---|---|
| #46 | Use for coarse finishing grinding for rough surface finishes of about Ra 3.2 μm (Rz 12.5 μm). |
| #60 | Use for finishing grinding for rough surface finishes of about Ra 1.6 μm (Rz 6.3 μm). |
| #80 | Use for finishing grinding for rough surface finishes of about Ra 0.8 μm (Rz 3.2 μm). |
| #100 - 220 | Use for precision finishing for rough surface finishes of Ra 0.2 μm (Rz 0.8 μm) or less. |
Relation of Particle Size and Grinding Conditions of General Grindstones (Reference)
| Coarse #46 |  |
Fine #220 | Details | |
|---|---|---|---|---|
| Grinding Allowance | Allowance is Large |  |
Allowance is Small | If the grinding allowance is large, please choose a coarser grain size. |
| Work Material | Clinging Materials | |
Brittle Materials | If the work material is soft or clinging, please choose a coarser particle size. |
| Soft Materials | |
Hard Materials | ||
| Grinding Surface Finish Coarseness | Coarse Finishing | |
Precision Finishing | If the required grinding surface finish is coarse, please choose a coarser particle size. |
| Grindstone Contact Area | Area is Large | |
Area is Small | If the contact area of the grindstone is wide, please choose a coarser particle size. |
Relation of Binding Degree and Grinding Conditions of General Grindstones (Reference)
| Soft H |  |
K Hard | Details | |
| Work Material | Brittle Materials | |
Clinging Materials | If the work material is brittle, please choose a softer binding grindstone. |
| Hard Materials | |
Soft Materials | If the work material is hard, please choose a softer binding grindstone. | |
| Grinding Allowance | Allowance is Small | |
Allowance is Large | If the grinding portion is large, please choose a harder binding grindstone. |
| Grindstone Contact Area | Area is Large | |
Area is Small | If the contact area is wide, please choose a softer binding grindstone. |
| Grindstone Periphery Speed | High Periphery Speed | |
Low Periphery Speed | If the periphery speed is high, please choose a softer binding grindstone. |
| Grindstone Feeding Speed | Fast Feeding | |
Slow Feeding | If the feeding speed is fast, please choose a softer binding grindstone. |
| Machine Vibration | Vibration is Large | |
Vibration is Small | If machine vibration is large, please choose a softer binding grindstone. |
Selection Method of General Grindstones (Reference)
Selection Table of General Grindstones for Flat Surface Grinding (Reference)
| Mountable Grindstones | Work Material | SG / EKG Grindstones |
WA Grindstones | 32A Grindstones | GC Grindstones | |||
|---|---|---|---|---|---|---|---|---|
| Outer Diameter x Hole Diameter | Thickness | Steel Type and Use | Heat Treatment Y/N | Finishing Degree | Blue | Red | Gray | Green |
| φ125 x φ12.7 | 13 | Regular Steel | Mild Steel | Finish | 60 K | |||
| φ150 x φ12.7 | 13 | Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Finish | 60 / 80 K | 60 / 80 K | ||
| Cemented Carbide | 120 H | |||||||
| 16 | Regular Steel | Mild Steel | Finish | 60 K | ||||
| Cemented Carbide | 120 H | |||||||
| φ150 x φ31.75 | 13 | Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Finish | 60 / 80 K | 60 / 80 K | ||
| φ150 x φ32 | 6.4 | Mold Cornering | Mild Steel | Precision Finishing | 220 K | |||
| Mild Steel, Tempered Materials | Precision Finishing | 220 I / J | ||||||
| φ180 x φ31.75 | 6.4 | Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Finish | 60 / 80 K | 60 / 80 J 60 / 80 K |
80 K | |
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Coarse Finishing | 46 K | |||||
| Mild Steel, Tempered Materials | Finish | 60 / 80 J | 60 J | |||||
| Mold Cornering | Mild Steel | Precision Finishing | 100 - 220 K | 100 / 120 K | 100 K | |||
| Mild Steel, Tempered Materials | Precision Finishing | 100 - 220 J 180 / 220 I |
||||||
| 10 | Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Coarse Finishing | 46 K | ||||
| Finish | 60 / 80 K | |||||||
| Mild Steel, Tempered Materials | Coarse Finishing | 46 J | ||||||
| Finish | 60 / 80 J | |||||||
| Mold Cornering | Mild Steel | Precision Finishing | 100 / 120 K | |||||
| 13 | Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Coarse Finishing | 46 K | 46 K | 46 K | ||
| Finish | 60 / 80 K | 60 / 80 K | ||||||
| Mild Steel, Tempered Materials | Coarse Finishing | 46 J | 46 J | 46 J | ||||
| Finish | 60 / 80 J | 60 / 80 J | 60 J | |||||
| Tempered Materials | Coarse Finishing | 46 H | 46 H | 46 H | ||||
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 I | |||||
| Finish | 60 / 80 I | |||||||
| Tempered Materials | Finish | 60 / 80 H | ||||||
| Mold Cornering | Mild Steel | Precision Finishing | 100 / 120 K | |||||
| Mild Steel, Tempered Materials | 100 J | |||||||
| 16 | Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Coarse Finishing | 46 K | 46 K | |||
| Mild Steel, Tempered Materials | 46 J | 46 J | ||||||
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Finish | 60 / 80 K | |||||
| Mild Steel, Tempered Materials | 60 J | |||||||
| 19 | Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Coarse Finishing | 46 K | 46 K | |||
| Finish | 60 K | 60 K | ||||||
| Mild Steel, Tempered Materials | Coarse Finishing | 46 J | 46 J | |||||
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Finish | 80 K | |||||
| Mild Steel, Tempered Materials | 60 J | |||||||
| φ205 x φ15.88 | 19 | Regular Steel | Mild Steel | Finish | 60 K | |||
| Cemented Carbide | 120 H / I | |||||||
| φ205 x φ19.05 | 19 | Cemented Carbide | Finish | 120 H | ||||
| φ205 x φ25.4 | 19 | Regular Steel | Mild Steel | Finish | 60 K | |||
| Cemented Carbide | Coarse Finishing | 80 / 120 H 120 I |
||||||
| 25 | Cemented Carbide | Finish | 120 H | |||||
| φ205 x φ31.75 | 6.4 | Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Finish | 60 / 80 K | 60 - 100 K | ||
| Mild Steel, Tempered Materials | Coarse Finishing | 60 / 80J | ||||||
| Mold Cornering | Mild Steel | Precision Finishing | 100 - 220 K | |||||
| Mild Steel, Tempered Materials | 220 J | |||||||
| 13 | Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Coarse Finishing | 46 K | 46 K | |||
| Finish | 60 / 80 K | 60 / 80 K | ||||||
| Mild Steel, Tempered Materials | Coarse Finishing | 46 J | 46 J | |||||
| Finish | 60 J | 60 J | ||||||
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 I | |||||
| Finish | 60 / 80 I 80 J | |||||||
| Tempered Materials | Coarse Finishing | 46 H | ||||||
| Finish | 60 / 80 H | |||||||
| Mold Cornering | Mild Steel | Precision Finishing | 100 / 120 K | |||||
| Mild Steel, Tempered Materials | 100 / 120 J | |||||||
| 19 | Standard Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Coarse Finishing | 46 K | 46 K | |||
| Finish | 60 / 80 K | 60 / 80 K | ||||||
| Mild Steel, Tempered Materials | Coarse Finishing | 46 J | 46 J | |||||
| Tempered Materials | 46 H | 46 H | ||||||
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 I | |||||
| Finish | 60 / 80 I 60 / 80 J |
|||||||
| Tempered Materials | Finish | 60 / 80 H | ||||||
| Mold Cornering | Mild Steel | Precision Finishing | 100 / 120 K | |||||
| Mountable Grindstones | Work Material | SG / EKG Grindstones |
WA Grindstones | 32A Grindstones | GC Grindstones | |||
|---|---|---|---|---|---|---|---|---|
| Outer Diameter x Hole Diameter | Thickness | Steel Type and Use | Heat Treatment Y/N | Finishing Degree | Blue | Red | Gray | Green |
| φ205 x φ50.8 | 19 | Standard Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Coarse Finishing | 46 K | 46 K | ||
| Finish | 60 K | 60 K | ||||||
| Mild Steel, Tempered Materials | Coarse Finishing | 46 I / J | 46 I / J | 46 J | ||||
| Tempered Materials | 46 H | 46 H | 46 H | |||||
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel | Finish | 80 K | |||||
| Mild Steel, Tempered Materials | 60 I / J 80 J | 60 J | ||||||
| Tempered Materials | 60 H | 60 H | ||||||
| φ255 x φ19.05 | 25 | Regular Steel | Mild Steel | Finish | 60 / 80 K | |||
| Cemented Carbide | ||||||||
| Cemented Carbide | Coarse Finishing | 120 H | ||||||
| φ255 x φ25.4 | 25 | Regular Steel | Mild Steel | Coarse Finishing | 46 K | 80 H | ||
| Finish | 60 / 80 K | |||||||
| Cemented Carbide | Coarse Finishing | 80 - 120 H 80 / 120 I |
||||||
| φ255 x φ50.8 | 25 | Regular Steel | Mild Steel | Coarse Finishing | 46 H / J | |||
| Finish | 60 J / K | |||||||
| φ305 x φ25.4 | 25 | Regular Steel | Mild Steel | Finish | 60 K | |||
| Cemented Carbide | Coarse Finishing | 80 / 120 H | ||||||
| 32 | Regular Steel | Mild Steel | Finish | 60 / 80 K | ||||
| Cemented Carbide | Coarse Finishing | 80 - 120 H 80 / 120 I |
||||||
| 38 | Cemented Carbide | Finish | 120 H | |||||
| φ305 x φ76.2 | 25 | Regular Steel | Mild Steel | Finish | 60 K | |||
| Mild Steel, Tempered Materials | Coarse Finishing | 46 J | ||||||
| Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Tempered Materials | Coarse Finishing | 46 I / J | 46 H | ||||
| 32 | Regular Steel | Mild Steel | Coarse Finishing | 46 K | ||||
| Finish | 60 K | |||||||
| Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 J | 46 I / J | ||||
| Finish | 60 I / J 80 J | |||||||
| Tempered Materials | Coarse Finishing | 46 I / J | 46 H | |||||
| 38 | Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 H | ||||
| φ305 x φ127 | 25 | Regular Steel | Mild Steel | Finish | 60 / 80 K | |||
| Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Tempered Materials | 60 G / J | ||||||
| 32 | Regular Steel | Mild Steel | Coarse Finishing | 46 K | ||||
| Finish | 60 K | |||||||
| Mild Steel, Tempered Materials | Coarse Finishing | 46 J | ||||||
| Finish | 60 J | |||||||
| Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Tempered Materials | Coarse Finishing | 46 J | 46 H | ||||
| 38 | Regular Steel | Mild Steel | Finish | 60 / 80 K | ||||
| Mild Steel, Tempered Materials | Finish | 60 J | ||||||
| Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 J | 46 J | ||||
| Tempered Materials | Coarse Finishing | 46 H | 46 H | |||||
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 H / I | |||||
| Finish | 80 H / J | |||||||
| Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Finish | 60 H | |||||
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Finish | 60 I | |||||
| Tempered Materials | 60 H | |||||||
| φ355 x φ31.75 | 38 | Cemented Carbide | Finish | 100 / 120 H 120 H |
||||
| 50 | Cemented Carbide | Finish | ||||||
| Coarse Finishing | 80 H | |||||||
| φ355 x φ38 | 38 | Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 G / H / I | |||
| Finish | 60 J | |||||||
| φ355 x φ50 | 50 | Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 I | |||
| Finish | 60 J | |||||||
| φ355 x φ76.2 | 38 | Regular Steel | Mild Steel | Finish | 60 K | |||
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Tempered Materials | 60 H | ||||||
| φ355 x φ127 | 38 | Regular Steel | Mild Steel | Finish | 60 K | |||
| Coarse Finishing | 46 K | |||||||
| Mild Steel, Tempered Materials | Coarse Finishing | 46 J | ||||||
| Finish | 60 J | |||||||
| Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Tempered Materials | Coarse Finishing | 46 G | 46 H | 46 H | |||
| Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Finish | 60 I | |||||
| Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 H / I | 46 I / J | ||||
| Finish | 10 H / J | 60 H / I | ||||||
| 50 | Regular Steel | Mild Steel | Finish | 60 J / K 80 K | 46 J | |||
| Coarse Finishing | 46 J | |||||||
| Regular Steel, Alloy Steel, Alloy Tool Steel, Stainless Steel |
Mild Steel, Tempered Materials | Coarse Finishing | 46 I 60 J | 46 H / J | ||||
| Finish | 60 H / J | |||||||
